sin 2x = 2 sin x cos x

冒牌Kit Kat：反咬你一口的玩具Kill Kat

10月 12, 2012

謝語竹

kuso

sin(2x)=2sin(x) cos(x) proof? | Yahoo Answers想吃Kit Kat，撕開巧克力包裝紙，怎麼跑出兩條想反咬人一口的巧克力妖怪？這不是Kit Kat啦！它們是英國玩具設計師Andrew Bell設計的幽默小玩具，名叫“Kill Kat”，快來瞧瞧這個令人嚇一跳後好氣又好笑的嚇人妖怪吧！   Kill Kat登場！ &(1/2)*sin(2x)*1 = sin(x)cos(x), multiply by 2: sin(2x) = 2sin(x)cos(x). JB · 8 years ago 5 Thumbs up ......

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【恐怖】你知道兵馬俑的頭是怎麼掉的嗎...

10月 15, 2012

蔡爾容

kuso

verify : tan^2xsin^2x = tan^2x - sin^2x? | Yahoo AnswersYou can't just divide by tan or cos or sin NOT AT ALL tan^2(x) sin^2(x) = tan^2(x) - sin^2(x) ta ......

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「哭爸哭母」的解釋...原來現在課本有教這個~

10月 15, 2012

郭靖萍

kuso

Trigonometric Identity: sin(2x) = 2sin(x)cos(x) - YouTube呃...原來哭爸現在不是髒話了阿... ... a very easy to understand proof of the common trigonometric identity, sin(2x) = 2*sin(x)cos(x). ......

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真的，你家的貓...該減肥了~

10月 15, 2012

黃懷雙

kuso

tomsmath.com: Differentiating f(x)=sin(x^2)+cos(2x) - YouTubeXD In this video you learn how to find the derivative of a function using the chain rule. This rule ......

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你也會不小心點到IE瀏覽器嗎？

10月 15, 2012

葉詩萍

kuso

How to solve for x, cos2x = sin (x+30) - QuoraThe function f(x) = cos(2 x)-sin(x+pi/6) is a periodic function with period 2 pi. It will have an ......

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90 的人都只數得出三個F~你也是嗎？

10月 15, 2012

黃友陽

kuso

cos 2x = 2 sin x - Math Central 奇怪，我第一次才數到三個...(試看看) 做這個測驗之前記得只能看一次!數一下，在下面的短文裡數有幾個FFINISHED FILES ARE THE RESULT OF YEARS OF SCIENTIFIC STUDY COMBINED WITH THE EXPERIENCE OF YEARS&cos 2x = 2 sin x Bobby, To solve this equation for x my first thought is to use the multiple angle ......

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